Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The network plot shows direct and indirect comparisons. The size of the nodes represents the total sample size of treatments. The lines’ thickness corresponds to the number of trials that compare each other. PVP: Percutaneous vertebroplasty; BK: Balloon kyphoplasty; CT: Conservative treatment.
